Rail-elevating jack



Jan. 5 1926.

F. HACKMANN RAIL smavnmo J'Acx Filed J9. 21, 1-924 3 Shuts-Sheet 1' I IEVE F. HACKMANN RAIL ELEVATING .mcx

Filed Jan. 1, 1924 3 Sheets-Sheet 2 v E UR Fr'e erickf/acffma rzn Patented Jan. 5, 1926.

FEEDER-ion HACHI'EIVEANN, or" CHICAGO, ILLI'N'oIs.

BAIL-'ELEVATING' JACK.-

Application filed January 21, 1924. Serial No. 687,463.-

ToaZZ 2072 am it may concern 1 Be it. known that I, FREDERICK HAon Marin, a citizen of the United States. and a resident of the city of Chicago, inthe county of Cook and State of Illinois, have invented certainnew and useful Improvements. in a Rail-Elevating Jack; and I hereby de lare that the following is a full, clear, and-enact description of the same, reference being: had to the accompanying drawings, and to the numerals of reference marked thereon, which fornra part of this specification. .Thisin-vention relates to a rail elevating jack adapted for use in railway track construction and comprises a jack adapted for engaging underneath a rail for raising-the same.

The invention comprises the novel. mechanism and combinations hereinafter described and more particularlypointed out; and defined in the appended claims.

In the accompanying.drawings which illustrate a preferred form of this invention and in which similar reference numerals re fer to similar features in the different views.

Figure 1 is an end elevational View of the rail lifting jack.

Figure 2 is a side elevational view of the lifting jack.

Figure 3 is an enlarged sectional view of the elevating jack with parts elevation.

Figure 4 is an elevational view of a railroad track illustrating the use of the jack.

Figure 5 is a sectional view upon the line of Figure 3.

Figure 6 is a detail view of the pawl and ratchet holding mechanism of the jack.

Figure 7 is a side elevational view of a modified form of jack with the rail engaging means removed.

Figure 8 is a top plan view of the same.

Figure 9 is' a sectional view upon the line 9--9 of Figure 7.

Referring to the drawings which illustrate one embodiment of this invention, the refer ence numeral 1 represents the base of the jack. This base is provided with downwardly extending anchoring tangs or the like for anchoring the jack adiacent a rail. A standard 2 rises from the base; the upper end of the standard being bifurcated, one arm 3 of the bifurcation extending above the other and being provided with spaced hearing lugs 4 and 5 that overhang the bifurcati n, A jack 1684 .1 6 is fulorumed upon said standard by means of a shaft 7. This lever is provided with a lower bifurcation for receiving the shorter arm of the standard 2 one arm of this bifurcation is in the form of a laterally offset ratchet wheel 8 having. teeth 9 and being journalled upon the shaft 7 the other arm of'the bifurcated lever depends below the shaft 7 and then extends at substantially a right angle as indicated at the pawl, normally urges the pawl into en gagement with the ratchet wheel.

In referring. to Figs. 2 and 4 it will be observed that the roller 11 is positioned a certain distance upon one side of the vertical plane passing longitudinally through the supporting shaft 7 of the lever. This distance represents the weight arm of the lever. The arm 10 projects laterally from the side of the lever or is laterally offset so that the jack may be positioned adjacent a rail with the roller 11 engaging under a rail. When the lever has been placed in such a position, it is only necessary to swing the operating handle 13 rearwardly to elevate the rail as shown in dotted lines in Fig. 4. When the rail has been raised, the pawl 14 engaging the ratchet will hold the lever in elevated position, during the swinging of the lever, the pawl 14 rides over the ratchet teeth as is obvious.

In Figures 7 to 9, I have .illustrated a slightly modified form in which the base 1 is provided with a rear wall 1 having spaced vertical strips 1 between which a pawl 16 is pivoted for engaging the ratchet wheel 8 100 which is formed upon the lower side of the pivotal portion of the lever instead of upon the upper side as in the first form. The pawl 16 is provided with a lateral lug 17 adapted for engaging a stop lug 18 upon the 105 bearing at the top of the strips 1 which sup port the pawl. A counter weight 19 depending fronr the lower side of the pawl normally holds the same in engagement with t h t h l.- A pawl trip lever 20 is L journalled upon a rod sustained by the strips l and is located beneath the pawl 16. This trip lever has an upwardly extending arm 20 adapted for engaging a depending lug 21 upon the pawl, and a hanger arm 20 in the form of a foot pedal. The pawl 16 may be thrown out of engagement with the ratchet by stepping upon the pedal 2O whereby the arm 20 is swung against the lug 21 for swinging the pawl 16 out of engagement with the ratchet 8*.

It will be appreciated that the device is very simple and can readily be moved from place to place and when in position will not interfere with a passing train.

I am aware than many changes may be made, and numerous details of construction may be varied through a wide range with out departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

I claim as my invention:

1. In a rail elevating jack having an upstanding bifurcated support, a lever having upon one side thereof a ratchet wheel journalled on said support with said ratchet wheel positioned in said bifurcation, said lever having a laterally offset arm on the other side of said lever from said ratchet wheel, a roller journalled in said arm adapted to engage a rail and means engaging said ratchet wheel to hold said lever in adjusted position.

2. In a rail elevating jack, a standard, a lever pivoted intermediate its ends upon said standard and having a laterally offset arm, a roller journalled in said arm for engaging under a rail, and cooperating means on said lever and standard for holding the former in adjusted position.

3. In a rail elevating jack, a base having a standard, a lever having a forwardly offset portion pivoted upon said standard through said offset portion, a laterally offset arm on said forwardly offset portion below said pivot and extending rearwardly, a roller journalled in said arm for engaging a rail and means for holding said lever in adjusted position.

4. In a rail elevating jack, a base having an upstanding bifurcated member, a lever having a lower forwardly offset bifurcated end, a pivot pin passing through said member and through said offset end, ratchet teeth on one fork of said bifurcated end, means engaging said ratchet teeth, a laterally offset arm on the other fork of said bifurcated end, and a roller journalled in said arm for engaging a rail.

In testimony whereof I have hereunto subscribed my name.

FREDERICK HAGKMANN. 

